javascript - jQuery replace all occurrences of a string in an html page

Question

I'm working on a project where I need to replace all occurrences of a string with another string. However, I only want to replace the string if it is text. For example, I want to turn this...

<div id="container">
  <h1>Hi</h1>
  <h2 class="Hi">Test</h2>
  Hi
</div>

into...

<div id="container">
  <h1>Hello</h1>
  <h2 class="Hi">Test</h2>
  Hello
</div>

In that example all of the "Hi"s were turned into "Hello"s except for the "Hi" as the h2 class. I have tried...

$("#container").html( $("#container").html().replace( /Hi/g, "Hello" ) )

... but that replaces all occurrences of "Hi" in the html as well

Answer 1

This:

$("#container").contents().each(function () {
    if (this.nodeType === 3) this.nodeValue = $.trim($(this).text()).replace(/Hi/g, "Hello")
    if (this.nodeType === 1) $(this).html( $(this).html().replace(/Hi/g, "Hello") )
})

Produces this:

<div id="container">
    <h1>Hello</h1>
    <h2 class="Hi">Test</h2>
    Hello
</div>

jsFiddle example